National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

A Few Clouds

81°F

27°C

Humidity 85%
Wind Speed S 14 mph
Barometer 29.98 in (1014.2 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 13 Oct 10:56 pm CDT
Extended Forecast for

Lockhart TX

  • Tonight

    Tonight: Partly cloudy, with a low around 76. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 93. Heat index values as high as 102. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 93 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 69. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 91. Southeast wind around 5 mph.

    High: 91 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. East southeast wind around 5 mph becoming calm.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 80. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.

    High: 80 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.

    Low: 56 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 75. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. North northeast wind 5 to 10 mph becoming light.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 76. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday
A slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 93. Heat index values as high as 102. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 69. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 91. Southeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 66. East southeast wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 80. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.
Friday Night
Partly cloudy, with a low around 56. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.
Saturday
Mostly sunny, with a high near 75. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 53. North northeast wind 5 to 10 mph becoming light.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly cloudy, with a low around 58.
Monday
Partly sunny, with a high near 85.
Monday Night
Mostly cloudy, with a low around 66.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
6:44 pm CDT Oct 13, 2026
Forecast Valid:
11pm CDT Oct 13, 2026-6pm CDT Oct 20, 2026
 
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Additional Resources

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